Car-wheel grinder.



G. H. BRAWLEY.

GAR WHEEL GRINDER.

APPLICATION FILED JUNE 1, 1912.

1,050,,9 1 5, Patented Jan.21, 1913.

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OAR WHEEL GRINDER. APPLICATION FILED JUNE 1, 1912.

1,050,915. Patented Jam 21,: 1913,-

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GAR-WHEEL GRINDER.

Specification of Letters Patent.

Patented Jan, 21,1913.

Application filed June 1, 1912. Serial No. 701,070.

To all whom it may concern: 1 7 Be it known that 1, Cameras LEY, a citizen of the'United States, residing at \Vhitefish, in the county of Flathead and State of Montana, have invented certain new and useful Improvements in- Gar-Wheel Grinders, of which the following is a spec fication, reference being had to the accompanying drawings. w

This invention relates to improvements in truing devices for locomotive wheel'tire's and has for its primary object to provide a simple, durable and efiicient device for purpose mounted upon the frame of an ene and including an emery v or other abrasive Wheel engaging the tread'surface of the wheel tire, and drive means also mounted upon the engine frame and engaging the tread surface of the wheel'totransmit rotation to the abrasive wheel. Another object of the invention is to rovide means for retaining the abrasive w eel in engagement with the tire of the locomoa tive wheel and means for mounting and adjusting the abrasive wheel as the tread face of the tire is worn down.

Another and more specific object of the invention is to provide an arbor slidably mounted upon the' engine frame, arms mounted upon said arbor at one of their ends and a bolt connecting the arms at their other ends, .an abrasive wheel rotatably mounted upon, the bolt between the, arms, and driving means for said wheel rotatably mounted upon said arbor, said driving means -bein also longitudinally movable upon the ar or so that the same will maintain its engagement with the periphery of the locomotive wheel in the lateral movement of the same.

With the above and other objects in view as will become apparent as the description proceeds, the invention consists in certain constructions, combinations and arrangements of the parts thatI shall hereinafter fully describe and claim.

For a full understanding of the invention, reference is to be had to the following description an d accompanying drawing in which- Figure 1 is a side elevation of a tire truing device embodying the present invention; Fig. 2 is a top plan view certain of the parts being shown in section; Fig. 3 is a section taken on the line 3-3 of Fig. 2; and Fig. 4 is a section-taken on the line 4-4 of Fig. 1.'

this

' issecured upon the Referring in detail to the drawing 5 des-.

ignates a plate which or otherwise rigidly fixed to the frame of the locomotive indicated/at F. This plate is is adapted to be. bolted provided with a'channel or guide way 671a; receive a head 8 formed upon one end an arbor 7. Upon this arborthe sleeve on thimble 9- is loosely mounted, and to the opposite ends of'this'sleeve the parallel arms .10 are secured atone of their ends. ,On end of the sleeve 9 is diametrically enlarged as shown at 11 and between this enlarged portion of the sleeve and the other of the arms the'dri-ve wheel 12is rotatabl mountwheel is provided with suitable bearings shown at'13. A tire 14 of rubber or other material having high frictional resistance pgiphery of the whee and is adaptedto surface of the locomotive drive wheel shown at D; To one facelof the wheel 12 a gear wheel 15-is securedrfby means of the bolts indicated at 16'. The other ends of the parallel arms 10 are connected by bolt 17 upon which the tubular hub or bushing 18 is mounted to rotate. -A wheel 19 ofemery or other abrasive material is splined upon this sleeve as shown at 20, and is adapted to bear against the tread face of the locomotive drive wheel 1) so as to grind the same in the rotation of said wheel and maintain a smooth surface upon the wheel tire for engagement with the tread of the rail. A gear Wheel 21 is also splined upon the ed upon said sleeve. The hub oft is drive means of a sleeve 9 and meshes with th'e'gear wheel 15 whereby' rotation istransmitted from the friction drive wheel 12 through the said gears to the abrasive wheel 19.

In order to guide the wheel 19 and maintain the same in a predetermined position with relation to the tread of the locomotive drive wheel, I provide a bracket plate 22 vhaving an elongated slot 23 therein through. which the bolt 17 extends. This bracket plate is arranged adjacent to one of the arms 10 and carries the spaced guide rollers 24, the peripheries of which are concave and receive the convex edge of the flange of the locomotive drive wheel D. A coil spring 25 has one of its ends secured to the bracket plate 22 and its other end fixed to a pin 26 projecting from the plate 5. A similar spring is alsosecured to the inner arm 10 at one of its ends and has its other end secured to a second pin 28 upon the of the drive wheel may be regulated as de-v sired. By loosely .mounting the sleeve .9.

.15 upon the arbor 7, the driving Wheel 12 is plate 5. These springs. act to' yieldingly maintain the guide wheels andthe friction .22, the abrasive wheel 19 may be disposed 'with relation to the tread surface 'of the locomotive drive wheel so that the frictional pressure of the abrasive wheel there: on and the consequent we'arupon the tread free to move longitudinally upon the arbor in the lateral movement of the locomotive presented to the surface of the rail.

, driving wheel-when rounding acurve of the track. Thus undue wear upon the frictional face 14 of the wheel 12 is eliminated and said drive wheel is maintained in proper en agement with the tread engagmg face 0 the wheel. Such sliding movement of the drive wheel is of course also transmitted to the abrasive wheel through the medium of the arms 10 so that the bearing face of said Wheel upon the periphery of the locomotive drlving wheel will maintain a constant position.

a From the foregoing'it is thought that the construction and manner of operation of my improved trulng devlce for locomotive wheel tires will be clearly understood. In.

the movement of the engine and the rota; tion of the driving wheel, the abrasive wheel 19 bearing upon the periphery of said drivin wheel grinds the tread engaging face 0% the tire so that a smooth surface Ais s the pressure of the abrasive wheel upon the tire 1s the same at all points of the tire, the grinding action of the wheel will be equal throughout all portions of the tread surface of the tire which are engaged thereby. A device constructed in accordancewith the present invention maybe applied to the ordinary locomotive at a nominal cost.

The device is also durable in construction, eflicient in'practicaloperation and may be inexpensively manufactured. While I have shown and described the preferred form Copies of this patent may be obtained for and construction of the various parts, it

ceptible of considerable modification without departing from the essential features of the invention or sacrificing any of the advantages thereof.

Having thus described the invention what is claimed is:

1. In combination, a vertically movable arbor, arms loosely mounted 'u on said will be; obvious that the invention 'is susarbor at one of their ends, a friction drive wheel, and gearing on .said rod. and the friction drive wheel to transmit rotary movement to the abrasive wheel.

2. In combination, a' guide, an arbor loosely mounted in said guide at one of its ends for vertical movement, arms loosely mounted upon the arbor, a rod connecting said arms, an abrasive wheel rotatably mounted on the rod to engage the tread face of the locomotive drivinwheel, 'a bracket looselv mounted u on saldrod, said rod being adfustable on t e' bracket to po- 1 i sitionthe abrasive wheel withrelation to the tread face of the driving wheel, guide rollers mounted upon said bracket to englage the flange of the driving wheel, a upon the arbor for engagement with the tread, surface of the locomotive driving wheel, a gear carried by said friction wheel,

and a gear mounted on the rodconnecting said arms meshing with the gear of said friction wheel to transmit rotationto the abrasive wheel. I

iction drive wheel rotatably mounted In testimony whereof I hereunto. aflix my.

signature in the presence of two witnesses.

, CHAS. H. BRAWLEY,

VVit-nesses: I r I i I J. E. CAVANAUGH, 1

G. C. NISWONGER.

five cents each, by addressing the Commissioner ofitatents' Washington,-D; G. i 

